K 1500 Truck 4WD V8-393 6.5L DSL VIN P (1995)
Turbo Boost Sensor: Description and Operation
EGR Control Pressure/BARO Sensor
DESCRIPTION
The boost sensor measures the changes in the intake manifold pressure. The boost sensor converts engine load and speed changes, then converts
the change in readings to voltage output.
OPERATION
The PCM sends a 5 volt reference signal to the boost sensor. As the manifold pressure changes, the electrical resistance of the boost sensor also
changes. By monitoring the sensor output voltage, the PCM detects the boost pressure. A high pressure (high voltage) requires more fuel. A lower
pressure (low voltage) required less fuel.
-
The control module uses the boost pressure signal to control fuel delivery.
